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71482881 = 346735099
BaseRepresentation
bin1000100001010…
…11111000000001
311222111201002010
410100223320001
5121244423011
611032043133
71525410621
oct420537001
9158451063
1071482881
1137394168
121bb334a9
1311a6a782
1496ca881
1564201a6
hex442be01

71482881 has 8 divisors (see below), whose sum is σ = 95349600. Its totient is φ = 47635712.

The previous prime is 71482877. The next prime is 71482891. The reversal of 71482881 is 18828417.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71482881 - 22 = 71482877 is a prime.

It is a super-2 number, since 2×714828812 = 10219604552120322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71482861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11470 + ... + 16568.

It is an arithmetic number, because the mean of its divisors is an integer number (11918700).

Almost surely, 271482881 is an apocalyptic number.

It is an amenable number.

71482881 is a deficient number, since it is larger than the sum of its proper divisors (23866719).

71482881 is a wasteful number, since it uses less digits than its factorization.

71482881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9775.

The product of its digits is 28672, while the sum is 39.

The square root of 71482881 is about 8454.7549343550. The cubic root of 71482881 is about 415.0183975973.

The spelling of 71482881 in words is "seventy-one million, four hundred eighty-two thousand, eight hundred eighty-one".

Divisors: 1 3 4673 5099 14019 15297 23827627 71482881